[SketchUp] Unity crashes at "GetAnalyticsData" when assigning material to a broken model

To reproduce:
1. Open attached Unity project "TestBeta.zip"
2. Click on "Untitled" model
3. In the inspector window, click on "Materials" tab
4. choose any _defaultMat material and click apply
(You should get "AssetImporter is referencing an asset from the previous import. This should not happen." error)
5. Click again on the now broken model
6. Choose _defaultMat again and click apply